curl --request GET \
--url https://api.chainrails.io/api/v1/router/optimal-route \
--header 'Authorization: Bearer <token>'import requests
url = "https://api.chainrails.io/api/v1/router/optimal-route"
headers = {"Authorization": "Bearer <token>"}
response = requests.get(url, headers=headers)
print(response.text)const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};
fetch('https://api.chainrails.io/api/v1/router/optimal-route', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://api.chainrails.io/api/v1/router/optimal-route",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "GET",
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"net/http"
"io"
)
func main() {
url := "https://api.chainrails.io/api/v1/router/optimal-route"
req, _ := http.NewRequest("GET", url, nil)
req.Header.Add("Authorization", "Bearer <token>")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.get("https://api.chainrails.io/api/v1/router/optimal-route")
.header("Authorization", "Bearer <token>")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.chainrails.io/api/v1/router/optimal-route")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Get.new(url)
request["Authorization"] = 'Bearer <token>'
response = http.request(request)
puts response.read_body{
"sourceChain": "BASE_TESTNET",
"destinationChain": "ARBITRUM_TESTNET",
"tokenIn": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"tokenOut": "0x06eFdBFf2a14a7c8E15944D1F4A48F9F95F663A4",
"originalAmount": "10000000",
"totalFees": "18000",
"bridgeToUse": "CCTP",
"bridgeAddress": "0xa1c943058a631D5506eb7d96036eAbF6968e2338",
"bridgeExtraData": "0x00000000000000000000000000000000000000000000000000000000000001f4",
"supportedBridges": [
"ACROSS",
"CCTP"
],
"bridgeFeeDetails": {
"maxFee": "8000"
}
}{
"statusCode": 400,
"message": "No bridges support route BASE_TESTNET -> STARKNET_MAINNET"
}{
"statusCode": 401,
"message": "Unauthorized"
}{
"statusCode": 500,
"message": "Failed to calculate optimal route"
}Find optimal cross-chain transfer route
Analyzes available bridges and returns the optimal route with best pricing
curl --request GET \
--url https://api.chainrails.io/api/v1/router/optimal-route \
--header 'Authorization: Bearer <token>'import requests
url = "https://api.chainrails.io/api/v1/router/optimal-route"
headers = {"Authorization": "Bearer <token>"}
response = requests.get(url, headers=headers)
print(response.text)const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};
fetch('https://api.chainrails.io/api/v1/router/optimal-route', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://api.chainrails.io/api/v1/router/optimal-route",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "GET",
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"net/http"
"io"
)
func main() {
url := "https://api.chainrails.io/api/v1/router/optimal-route"
req, _ := http.NewRequest("GET", url, nil)
req.Header.Add("Authorization", "Bearer <token>")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.get("https://api.chainrails.io/api/v1/router/optimal-route")
.header("Authorization", "Bearer <token>")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.chainrails.io/api/v1/router/optimal-route")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Get.new(url)
request["Authorization"] = 'Bearer <token>'
response = http.request(request)
puts response.read_body{
"sourceChain": "BASE_TESTNET",
"destinationChain": "ARBITRUM_TESTNET",
"tokenIn": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"tokenOut": "0x06eFdBFf2a14a7c8E15944D1F4A48F9F95F663A4",
"originalAmount": "10000000",
"totalFees": "18000",
"bridgeToUse": "CCTP",
"bridgeAddress": "0xa1c943058a631D5506eb7d96036eAbF6968e2338",
"bridgeExtraData": "0x00000000000000000000000000000000000000000000000000000000000001f4",
"supportedBridges": [
"ACROSS",
"CCTP"
],
"bridgeFeeDetails": {
"maxFee": "8000"
}
}{
"statusCode": 400,
"message": "No bridges support route BASE_TESTNET -> STARKNET_MAINNET"
}{
"statusCode": 401,
"message": "Unauthorized"
}{
"statusCode": 500,
"message": "Failed to calculate optimal route"
}Authorizations
Enter your Chainrails API key as a Bearer token
Query Parameters
Input token contract address
"0xA0b86a33E6411192B1F4ec3eB801B21EB56"
Output token contract address
"0xA0b86a33E6411192B1F4ec3eB801B21EB56"
Source blockchain
ARBITRUM_MAINNET, ARBITRUM_TESTNET, AVALANCHE_MAINNET, AVALANCHE_TESTNET, BASE_MAINNET, BASE_TESTNET, STARKNET_MAINNET, STARKNET_TESTNET, BSC_MAINNET, ETHEREUM_MAINNET, ETHEREUM_TESTNET, OPTIMISM_MAINNET, OPTIMISM_TESTNET, MONAD_MAINNET, MONAD_TESTNET, POLYGON_MAINNET, HYPEREVM_MAINNET, LISK_MAINNET, SOLANA_MAINNET, SOLANA_TESTNET, TRON_MAINNET "BASE_MAINNET"
Destination blockchain
ARBITRUM_MAINNET, ARBITRUM_TESTNET, AVALANCHE_MAINNET, AVALANCHE_TESTNET, BASE_MAINNET, BASE_TESTNET, STARKNET_MAINNET, STARKNET_TESTNET, BSC_MAINNET, ETHEREUM_MAINNET, ETHEREUM_TESTNET, OPTIMISM_MAINNET, OPTIMISM_TESTNET, MONAD_MAINNET, MONAD_TESTNET, POLYGON_MAINNET, HYPEREVM_MAINNET, LISK_MAINNET, SOLANA_MAINNET, SOLANA_TESTNET, TRON_MAINNET "ARBITRUM_MAINNET"
Transfer amount in token units (wei for ETH)
"1000000000000000000"
Recipient address for the cross-chain transfer (required for some bridges like RhinoFi)
"0x742d35cc6634c0532925a3b8d7389d8c5b7cf15b"
Token symbol for amount denomination (e.g., USDC, USDT, ETH)
"USDC"
Response
Optimal route found successfully
"BASE_TESTNET"
"ARBITRUM_TESTNET"
"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
"0x06eFdBFf2a14a7c8E15944D1F4A48F9F95F663A4"
Original transfer amount
"10000000"
Total fees (bridge fee + ChainRails fee)
"18000"
ACROSS, CCTP, GATEWAY, RHINOFI "CCTP"
"0xa1c943058a631D5506eb7d96036eAbF6968e2338"
"0x00000000000000000000000000000000000000000000000000000000000001f4"
ACROSS, CCTP, GATEWAY, RHINOFI ["ACROSS", "CCTP"]
Bridge-specific fee details (structure varies by bridge)
{ "maxFee": "8000" }
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